Initial experience with permanently implanted transvenous pacemakers.
D000368:Aged; D000787:Angina Pectoris / Q000150:complications; D001145:Arrhythmias, Cardiac / Q000150:complications; D001919:Bradycardia / Q000150:complications; D006328:Cardiac Catheterization; D004558:Electric Stimulation; D005260:Female; D005500:Follow-Up Studies; D006327:Heart Block / Q000628:therapy*; D006333:Heart Failure / Q000150:complications; D006352:Heart Ventricles; D006801:Humans; D008297:Male; D008875:Middle Aged; D009203:Myocardial Infarction / Q000150:complications; D010138:Pacemaker, Artificial; D013902:Radiography, Thoracic; D014680:Veins